JPS58198149A - Method and apparatus for winding honey-comb coil - Google Patents

Abstract

PURPOSE:To automatize the operation for winding a coil, by driving a bobbin and fingers so that they rotate in the same direction and have a predetermined speed difference therebetween. CONSTITUTION:A wire 4 fed while reciprocating along the axial direction of a bobbin 1 is turned retained by a pair of fingers 7 which are disposed on the outer periphery of the bobin 1 so as to be 180 deg. offset from each other in the circumferential direction as well as separate by the width of a coil in the axial direction of the bobbin 1. The bobbin 1 and the fingers 7 are driven by first and second drive sources directly connected to first and second drive shafts 2 and 10, respectively, so as to rotate in the same direction and have a predetermined speed difference between the bobbin 1 and the fingers 7. Since this speed difference allows the fingers to rotate along the outer periphery of the bobbin in retard of the bobbin by a predetermined amount, it is possible to form windings very close to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for winding a honeycomb coil used, for example, in a rotor of a coreless motor.

Usually, a coil with so-called honeycomb winding is used for a rotor used in a coreless motor.

As shown in Figures 1 and 2, this coil has a lattice shape with each winding forming a constant angle θ with respect to the circumferential direction, and the windings overlapping each other while being turned back every 180° along the circumferential direction. The winding process is extremely complicated, and in the past, there was no special means for manufacturing this type of coil, resulting in low productivity per piece and a slow manufacturing process. The yield was also extremely low, with some cases of failure.

The present invention was made in view of these circumstances, and its purpose is to facilitate the production of honeycomb coils,
The present invention provides a method and device for winding a honeycomb coil, which improves productivity and yield.

In order to achieve the above object, the present invention is characterized by the following configuration.

The above-mentioned bobbin and the above-mentioned finger are fixed to a pair of fingers arranged on the outer periphery of the bobbin with their tips shifted by 180 degrees in the circumferential direction and spaced apart by the width of the coil in the axial direction of the bobbin, and folded back. The coil is rotated in the same direction with a predetermined speed difference between the two, making it possible to automate the coil winding work and improve productivity and yield. This is a method of winding a honeycomb coil.

In addition, a device for implementing the above method was installed on a bobbin around which a coil is wound, and on the outer periphery of this bobbin, the tips of which are offset by 180 degrees in the circumferential direction, and separated by the width of the coil in the axial direction of the bobbin. A pair of fingers that are placed at certain positions to lock and fold the wire to be wound around the shaft, and a supply position that reciprocates along the axial direction of the bobbin and in synchronization with the rotation of the bobbin. The winding work of the coil can be automated by comprising a wire supply means for causing the coil to wind, and a drive source that rotates the bobbin and the finger in the same direction with a predetermined speed difference between them. Of course, it is a honeycomb coil winding device that is simple and can be manufactured at low cost, so the cost of the coil to be manufactured is also low.

Embodiments of the present invention will be specifically described below with reference to the drawings.

In Fig. 3, 1 is a bobbin for winding the coil, and both ends of the bobbin are removably supported by the first drive shafts 2, 2, and rotate together with the drive shafts 2, 2 in the direction of arrow α. Driven. On the outer periphery of one end of the bobbin 1, pins 3° for making taps, which will be described later, are protruded and retracted at appropriate intervals.

Further, a tongue-shaped wire stopper 5 for locking one end of the wire 4 is attached via a screw 6 to the vicinity of these pins 3''.

M and F are a pair of fingers having claws 8 and 8 attached to their tips through screws 9 and 9, respectively.
70 proximal end is fixed to the outer circumference of a cylindrical rotating body 1111 whose base end is integrally fixed to the second drive shaft 10゜10) 12.12
The tips 8a, 8a of the claws 8.8 are attached to the outer periphery of the bobbin 1 by 18 degrees along the circumferential direction.
At the same time, they are arranged in contact with the circumferential surface of the bobbin 1 or without contact with the circumferential surface of the bobbin 1 at a position separated by the width of the coil (indicated by ! in the figure) in the axial direction of the bobbin 1.

The wire rod 4 wound around the bobbin 1 is connected to its tip 8a.
, 8a to lock it and fold it back.

The bobbin 1 and the fingers 7 and '7 are moved in the same direction by a first drive source and a second drive source (both not shown) which are directly connected to the first and second drive shafts 2 and 10, respectively. , and are rotationally driven such that a predetermined speed difference is generated between the bobbin 1 and the fingers 7.7.

As the speed difference, in this embodiment, the fingers 7.7 are set so that during one rotation of the bobbin 1, the fingers 7.7 overflow in the circumferential direction of the bobbin 1 and rotate with a delay of an amount equivalent to 40 wire diameters. Ru. The rotational speeds of the motors, which are the first and second drive sources, are set so that the above speed difference occurs.

Reference numeral 13 denotes a wire supply means that reciprocates the supply position of the wire 4 along the axial direction of the bobbin 1 and in synchronization with the rotation of the bobbin 1.

This means 13 is constructed by pivoting the proximal end of a rotating arm 15, which has a through hole 14 at its distal end through which the wire 4 is inserted, to a base (not shown), so that the through hole 14 extends in the axial direction of the bobbin 1. The tip of the guide pin 16 protruding into the middle part of the rotating arm 15 is fitted into the profiling groove 18 carved on the outer periphery of the copying roll 17, so that the guide pin 16 The copying movement is made along the copying groove 1, and the copying roll 17
The tip of the rotary arm 15 reciprocates along the axial direction of the bobbin 1 by the rotation of the rotary arm 15.

The copying groove 18 is carved on the circumferential surface of the copying roll 1'7 in a shape such that, for example, a sinusoidal waveform for one period is drawn.

Further, the drive shaft 1'7a of the copying roll 17 is connected to the first drive shaft 2 that drives the bobbin 1, so that the bobbin 1 and the copying roll 17 are rotated at a constant speed. In other words, the rotating arm 15 makes one reciprocating motion every time the bobbin 1 rotates once.

Next, a winding method using the winding device of the above embodiment will be specifically explained with reference to FIG. 4.

First, one end of the wire 4 is locked to the wire stopper 5 and the bottle 3, and the bobbin 1 and the fin H-'+'h
When the wire rod 4 is rotated in the direction of the arrow α, the wire rod 4 is wound around the outer circumference of the bobbin 1 at a constant angle θ with respect to the circumferential direction, and each time the wire rod 4 reaches both ends of the coil 2o, the wire rod 4 is wound between the fingers.
It is caught by the tip ends 8a, 8a of the claws 8, 8 provided at 7, folded back, and wound in sequence as shown in FIGS. 4(a) to (f'l).

By the way, the wire rod 4 which is locked and folded back by the tips 8a, 8a of the claws 8, 8 is temporarily locked by the tips 8a of the claws 8, but there is a gap between the bobbin 1 and the fingers 7, 7. Bobbin 1
The dowel claws 8, 8 have a speed difference set such that the fingers 7.7 rotate along the circumferential direction of the bobbin 1 with a delay of an amount corresponding to the outside diameter of the wire 4 during one rotation of the Each time the bobbin 1 rotates once, the locked wire 4 comes off the tips 8a, 8a of the claws 8.8 and remains on the bobbin 1 side, and the current winding is attached to the previous winding on the bobbin 1. The windings are wound closely and sequentially.

By the way, the total number of turns T of the coil, bobbin 1 and finger 7
．． The following relationship holds true with the rotational speed of 7.

I T: Total number of coil turns, N□...Bobbin rotation speed N2
: Rotational speed of the finger Now, if the total number of turns of the coil is set to 100 and the rotational speed N1 of the bobbin is set to 1100Orpm, it is understood that the rotational speed N2 of the finger should be set to 99Orpm.

Further, FIGS. 4(d) and 4(e) explain how to set the tap t.

In the middle of winding, the bobbin 1 and the fingers 7.7 are stopped, the wire 4 between the bobbin 1 and the wire supply means 13 is loosened and fixed to the pin 3.3 in the shape of a leopard as shown in the figure, and the coil is wound. When the line work is completed, each pin 3... is inserted into the bobbin 1, the pins 3... are released from the taps t..., and the core 20 is pulled out from the bobbin 1. Further, after removing it from the bobbin 1, each tap t... is twisted as shown in FIG. 4 (0).

As explained above, according to the method of the present invention, it is possible to automate the winding work of Nekam coils, which was conventionally considered to be complicated, and it is possible to improve productivity and yield all at once. be.

Even if the wire diameters of the wire rods are different, it can be easily handled by appropriately selecting the rotational speeds of the bobbin and fingers, and especially as shown in this example, the difference in rotational speed between the bobbin and fingers Since the fingers are set to rotate along the outer periphery of the bobbin with a delay of an amount corresponding to the outside diameter of the wire rod during one rotation of the bobbin, each winding wire is wound closely and orderly. A structurally strong coil can be manufactured.

Further, by arbitrarily changing the relative speed set between the bobbin and the fingers, the winding density can be easily changed.

Further, according to the device of the present invention, the structure is simple and the device itself can be manufactured at a relatively low cost, so that the manufacturing cost of the coil can be significantly reduced.

Incidentally, in this embodiment, a drive source for rotationally driving the bobbin 1 and the fingers 7°7 is provided independently, but for example, the first
and a reducer is interposed between the second drive shafts 2 and 10,
It may also be driven by separate driving staffs.

Alternatively, the wire 4 to be wound around the bobbin 1 may be coated with a resin in advance, and after the coil is formed, the coating layer may be melted by heating with hot air or the like, and then the entire coil may be solidified by cooling.

It goes without saying that the wire supply means 13 is not limited to that shown in this embodiment.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a honeycomb coil, Fig. 2 is an explanatory view showing the deployed state of the honeycomb coil, Fig. 3 is a perspective view of main parts showing one embodiment of the present invention, and Figs. 4(a) to (f). ) are explanatory diagrams showing the winding procedure of the coils. 1...Bobbin 4...Wire rod 7...Finger 8
... Claw 13 ... Wire supply means

Claims (3)

[Claims] (1) Wire rods that are fed while reciprocating along the axial direction of the bobbin are arranged on the outer periphery of the bobbin with their tips shifted by 1800 degrees in the circumferential direction and spaced apart by the width of the coil in the axial direction of the bobbin. The bobbin and the fingers are rotated in the same direction with a predetermined speed difference between the bobbin and the fingers. How to wind a honeycomb coil. (2) The rotation speed difference created between the bobbin and the finger is set so that the finger lags along the outer circumference of the bobbin by an amount equivalent to the wire diameter of the wire during one rotation of the bobbin. A method for winding a honeycomb coil according to claim 1. (3) A bobbin for winding a coil, and a bobbin whose tips are offset by 1800 degrees in the circumferential direction and spaced apart by the width of the coil in the axial direction of the bobbin, and then wound around the bobbin. a pair of fingers for locking and folding the wire, a wire supply means for reciprocating a supply position for supplying the wire along the axial direction of the bobbin and in synchronization with the rotation of the bobbin; the bobbin and the finger; 1. A honeycomb coil winding device comprising: a drive source that rotates both in the same direction and with a predetermined speed difference between the two.